Ultrafine silicon powder can be used in plastics for polyvinyl chloride (PVC) flooring, polyethylene and polypropylene films, electrical insulation materials and other products. Polyvinyl chloride floor tiles filled with silicon powder can enhance the abrasion resistance of the product. In the PVC floor, the fineness of 320-mesh quartz powder, and the filling amount of 160-180, the floor made fully meets the requirements of the GB4085-83 standard. The floor surface has good smoothness and good scratch resistance.

In the PVC acid-resistant board tube, when the filling amount of 400 mesh quartz powder is 10% to 15%, compared with other fillers, the viscosity is low, the fluidity is good, and the processing performance is improved, which is beneficial to the extrusion and molding of the product. The acid resistance of the obtained acid-resistant plate tube is significantly improved.

Polyethylene (PE) agricultural film filled with silicon powder with large specific surface area (above 600 mesh) and high activity can improve the physical and chemical properties and optical properties of the product, and polypropylene filled can improve the mechanical properties of the product. Yu Zhiwei studied the application of powdered quartz in PE film. After ultra-fine, grading, purification and surface modification, powdered quartz ore was filled in PE film. The use of quartz has the function of blocking infrared rays and slowing down the heat loss of plastic greenhouses. , Improve its heat preservation performance.

Through research, when ultra-fine quartz powder is added to the PE film by 8%-12%, its processing performance is good, the filler is dispersed in the resin, the fluidity is good, the distribution is uniform, and the mechanical properties of the prepared PE film are close to the pure resin film. National standard requirements.

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